build fail on main: makepad_ai_services::peer not found #317

Summary

cargo build --release -p octosense fails on main (commit 4a54177, tag desktop-v0.1.0-beta.1) because crates/ai-host/src/module_peer.rs imports makepad_ai_services::peer, but the pinned makepad fork exposes the peer module under makepad_ai_hub::peer instead.

Reproduction

```sh
git clone https://github.com/OctoSense-org/OctoSense
cd OctoSense
cargo build --release -p octosense
```

Error

```
error[E0432]: unresolved import makepad_ai_services::peer
--> crates/ai-host/src/module_peer.rs:22:26
|
22 | use makepad_ai_services::peer::{PeerDown, PeerLink, PeerUp};
| ^^^^ could not find peer in makepad_ai_services

error: could not compile octosense-ai-host (lib) due to 1 previous error
```

The same wrong path appears at crates/ai-host/src/module_peer.rs:67 (use makepad_ai_services::peer::{OctosPeer, PeerCaller, PeerToolOutcome};).

Root cause

The pinned makepad fork at rev c155f61d0e1600d2ec474209374444a38a09a470 exports:

• makepad_ai_hub::peer (.sources/makepad/libs/ai/hub/src/lib.rs:91: pub mod peer;)
• makepad_ai_hub::peer_fetch
• makepad_ai_hub::peer_serve

The makepad_ai_services crate exists at .sources/makepad/libs/ai/services/src/lib.rs but does not declare a peer module. Its lib.rs only re-exports engine, port, state, wire.

crates/ai-host/src/module_peer.rs was added in commit a672eb8 (PR #142, 2026-09-30) referencing makepad_ai_services::peer, but the runtime was repinned to the current makepad fork the same day (6c4746f, PR #192, 2026-09-30) so the import no longer resolves.

Suggested fix

• Option 1 (minimal, 2 lines): rename the import path in crates/ai-host/src/module_peer.rs from makepad_ai_services::peer to makepad_ai_hub::peer (two use lines: L22 and L67). This matches what the current pinned runtime actually exposes.
• Option 2: re-export peer under the makepad_ai_services name in makepad so the OctoSense contract is preserved.

Option 1 is the lowest-risk fix and unblocks the build immediately.

Environment

• OctoSense: 4a54177 (main, tag desktop-v0.1.0-beta.1)
• Makepad pin: c155f61d0e1600d2ec474209374444a38a09a470
• App Hub pin: 0d5b47a2ae9eb98020feca26b7c895a3cf797dc1
• rustc: stable (the workspace's resolver-default)